Pension Plans (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic pension cost for the Dutch pension plans were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2021		2020		2021		2020
Net service cost	$	(1,107)	$	(1,355)	$	(2,216)	$	(1,625)
Interest cost	(166)		(405)		(332)		(486)
Expected return on plan assets	109		252		217		302
Administrative charges	(72)		(108)		(143)		(130)
Net periodic pension cost	$	(1,236)	$	(1,616)	$	(2,474)	$	(1,939)